Have you been hypnotized (for real) before by a hypnotist with any lasting strange effects? Maybe you were experimenting with it at a party or stage, and the suggestions lasted longer than you want.
Some really deep somnambulists sometimes have hypnotist's suggestions go too far with unwanted effects. In rare cases, you are left with embarrassing aftereffects with nowhere to turn.
Tell me what happened/happens. I've run across several cases where people are too embarrassed to get help. I can help you with total discretion.